Financial Instruments (Schedule of the Fair Value of Assets and Liabilities Related to Derivatives Designated as Hedging Instruments) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Derivatives, Fair Value [Line Items]
Total assets	$ 46	$ 74
Total liabilities	4	21
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Currency Contracts | Prepaid Expenses and Other
Derivatives, Fair Value [Line Items]
Total assets	5	0
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Currency Contracts | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	4	4
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swaps | Deferred Income Taxes and Other Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	0	16
Designated as Hedging Instrument | Cash Flow Hedging | Commodity Contracts | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Total liabilities	0	1
Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Swaps | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total assets	1	27
Designated as Hedging Instrument | Fair Value Hedging | Cross Currency Interest Rate Contract [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total assets	6	47
Designated as Hedging Instrument | Fair Value Hedging | Cross Currency Interest Rate Contract [Member] | Prepaid Expenses and Other
Derivatives, Fair Value [Line Items]
Total assets	$ 34	$ 0